HotKeys to increase/decrease speakup volume during debian installation

Linux for blind general discussion blinux-list at
Fri Jan 12 11:00:45 UTC 2018

Hi All,

I'm installling Debian using speech synthesizer and the speakup volume 
is so low I can barely hear it. Can anyone here suggest a way to 
increase/decrease volume of speakup with keyboard hotKeys?

Any help would be appreciated.

Best Regards

Edhoari Setiyoso
edhoari <dot> s [at] gmail <dot> com

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